AuSsIeThUnDeR36

This is just all cheating. There's a much easier way, just hop over the fence to the left, jump on bike or get in your car, drive around the back, everyone starts shooting but don't panic. There's a gap in the wall behind the truck. Once you approach this gap the truck will start driving off, then just run and grab the back. No armor/health damage.

Benjamin Isaac

Once you approach this gap the truck will start driving off, then just run and grab the back.

upto grabbing the back of the truck is easy, but going to the driver of the truck by crawling is little difficult while truck is moving, sometimes it will end you glitch like this:https://www.youtube....h?v=EWnNi4LEQ54

so we have to spawn some objects in-front & behind the truck to stop the motion of truck, so it will easy to crawl to the driver of the truck.

AuSsIeThUnDeR36

Seriously it's not that hard to crawl on the roof. Just keep going forward and when the driver approaches a corner, roll to the same side of the turn ie - truck is turning right so roll to the right, because Niko will slide to the left.